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3 cijfers X 3 cijfers met hulp [3]

3 cijfers X 3 cijfers met hulp [3]

 
3 8 6
6 3 5 ×
5 × 6 =
30
5 × 80 =
400
5 × 300 =
1500
30 × 6 =
180
30 × 80 =
2400
30 × 300 =
9000
600 × 6 =
3600
600 × 80 =
48000
600 × 300 =
+ 180000
245110